J/A+AS/118/495 Spectroscopy of MWC 349 A (Andrillat+ 1996)
B[e] stars. II. MWC 349 A
Andrillat Y., Jaschek M., Jaschek C.
<Astron. Astrophys. Suppl. Ser. 118, 495 (1996)>
=1996A&AS..118..495A 1996A&AS..118..495A (SIMBAD/NED BibCode)
ADC_Keywords: Equivalent widths ; Spectra, infrared
Keywords: stars: emission line, B[e] - stars: variables: others -
stars: MWC 349 A
Description:
We analyse spectroscopic CCD material obtained at the Haute Provence
Observatory. We provide line identifications and equivalent width
measurements in the wavelength region 3700-8790A. Over 300 emission
features are identified and a comparison of our results with those of
other authors is provided, as well as a table of all elements which
have been identified in the spectrum of the object. The pattern of
elements present is analogous to that of B-type stars, but some
exceptions are noted, such as the absence of C, Al and Mn. We review
the present knowledge of the spectrum variability of MWC 349A. The
observations indicate th at the equivalent widths of the lines of many
elements vary by factors of up to two. We also provide a list of
diffuse interstellar features observed. The latter lead to an average
(B-V) excess of about two magnitudes, which is less than what is
expected for an object having an interstellar extinction of 10-11
magnitudes.
Objects:
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RA (2000) DE Designation(s)
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20 32 45.4 +40 39 37 MWC 349A
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2 70 315 Emission lines measured in MWC 349
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See also:
J/A+AS/117/281 : B[e] stars. I. HD 51585 (= OY Gem)
J/A+AS/120/99 : B[e] stars. III. MWC 645
J/A+AS/124/441 : B[e] stars. IV. MWC 142
J/A+AS/128/475 : B[e] stars. V. MWC 158
J/A+AS/131/479 : B[e] stars. VI. MWC 297
Byte-by-byte Description of file: table2
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Bytes Format Units Label Explanations
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1 A1 --- Spect Spectrum (see table1)
3- 10 F8.3 0.1nm Lambda Wavelength
11 A1 --- n_Lambda [&] An & indicates probably affected by
atmospheric absorption
13- 18 F6.2 0.1nm EW ? Equivalent width of the emission line
19- 23 A5 --- n_EW Note on EW (1)
25- 74 A50 --- Ident Line identification of the order element
ionization stage and multiplet number (2)
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Note (1): p refers to the preceding line
f refers to the following line
- indicates the absence of the line on this particular plate
Note (2): J stands for Johansson (1978)
"Meinel" stands for Meinel et al. (1969)
The identification of Fe II 8423 and 8672 was taken from
Johansson (1977) and HeI 8585 and 8776 from Jaschek et al. (1994)
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Table1: Observational data
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Code Range Date Spectrum
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a 3740-4195 22-06-94 underexposed
b 4130-4594 24-07-93 noisy
c 4554-5007 25-07-93 noisy
d 4883-5335 22-06-94
e 5533-5984 21-06-94
f 6017-6467 22-06-94
g 6332-6780 20-06-95
h 7008-7450 18-06-94
i 7590-8014 18-08-91
j 7983-8420 23-07-93
k 8370-8780 17-08-91
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References:
Jaschek C. et al., 1994, A&A 282, 911 =1994A&A...282..911J 1994A&A...282..911J
Johansson S., 1977, MNRAS 178, p17 =1977MNRAS.178p..17J 1977MNRAS.178p..17J
Johansson S., 1978, Phys. Scripta 18, 217
Meinel A.B. et al., 1969, Catalog of emission lines in astrophysical
objects, Tucson
(End) Patricia Bauer [CDS] 25-Mar-1996